CN104105881A - Scroll compressor - Google Patents
Scroll compressor Download PDFInfo
- Publication number
- CN104105881A CN104105881A CN201280068982.7A CN201280068982A CN104105881A CN 104105881 A CN104105881 A CN 104105881A CN 201280068982 A CN201280068982 A CN 201280068982A CN 104105881 A CN104105881 A CN 104105881A
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- Prior art keywords
- back pressure
- chamber
- convolution
- slit
- scroll compressor
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
- F04C27/005—Axial sealings for working fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0246—Details concerning the involute wraps or their base, e.g. geometry
- F04C18/0253—Details concerning the base
- F04C18/0261—Details of the ports, e.g. location, number, geometry
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/008—Hermetic pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Provided is a highly reliable scroll compressor which can supply oil to a back pressure chamber even during low pressure ratio conditions. A scroll compressor comprising a stationary scroll, and a revolving scroll that forms a compression chamber by revolving in a relative manner with respect to the stationary scroll, a back pressure chamber for pushing the revolving scroll into the stationary scroll being formed in the back surface of the revolving scroll relative to the stationary scroll; wherein the scroll compressor is provided with a back pressure valve or a back pressure hole for regulating the pressure of the back pressure chamber, a first oil supply means for supplying oil to the back pressure chamber from a discharge pressure space where a compressed refrigerant from a compression chamber is discharged, and a second oil supply means for supplying oil from the back pressure chamber either to the compression chamber or to an intake chamber formed in the intake side of the compression chamber.
Description
Technical field
The present invention relates to a kind of scroll compressor.
Background technique
As the background technique of the art, there is Japanese kokai publication hei 9-228968 communique (patent documentation 1).In this communique, record " a kind of scroll compressor; it is characterized in that; possess hydraulic chamber and the low pressure chamber of high pressure in the runner plate back part of convolution whirlpool dish across sealed department; the runner plate back part at convolution whirlpool dish is provided with the hole that aperture is less than the seal ring width of sealed department; and the leakage of oil mechanism being constructed as follows, this leakage of oil mechanism is accompanied by the convolution whirlpool dish with this hole and carries out circumnutation and make the oil of hydraulic chamber lodge in this hole and stride across described seal ring to discharge in low pressure chamber side " (with reference to claim 1).
As other background techniquies, there is TOHKEMY 2011-58439 communique (patent documentation 2).In this communique, record " a kind of scroll compressor; it is characterized in that; possess: oil feeding mechanism; it is by arranging aperture with convolution whirlpool dish back part or the framework of the opposed part of sealing mechanism; make this aperture be accompanied by the circumnutation of convolution whirlpool dish and stride across sealing mechanism to the two opening alternately of high pressure oil pressure chamber side and back pressure chamber side, thus by the fuel feeding of high pressure oil pressure chamber to back pressure chamber side; And for oil circuit, it is arranged in convolution whirlpool dish or framework, and high pressure oil pressure chamber is communicated with back pressure chamber, utilize differential pressure by the fuel feeding of high pressure oil pressure chamber to back pressure chamber side " (with reference to claim 1).
Prior art document
Patent documentation
Patent documentation 1: Japanese kokai publication hei 9-228968 communique
Patent documentation 2: TOHKEMY 2011-58439 communique
Brief summary of the invention
The problem that invention will solve
Because all utilizing the differential pressure in back pressure chamber and row pressure space, patent documentation 1,2 carries out fuel feeding to back pressure chamber, therefore at low-pressure than under condition, the pressure in row pressure space diminishes, cannot be from row pressure space to back pressure chamber fuel feeding so exist back pressure and head pressure to become to equate may.If cannot be in this way to back pressure chamber fuel feeding, cannot carry out slide part lubricated of cross slip-ring (Oldham Ring), and cannot guarantee the required oil mass of sealing of pressing chamber, filter loss increases, and compressor efficiency reduces.
Summary of the invention
Therefore, even if the object of the present invention is to provide at low-pressure than also carrying out fuel feeding and the high scroll compressor of reliability to back pressure chamber under condition.
Solution
For example, in order to solve described problem, the structure that adopts claims to record.
The means that the application comprises the described problem of multiple solutions, enumerate a wherein example, it is characterized in that, " scroll compressor possesses: fixed eddy plate, and it has fixed side plat part and erects the first roll bending in the one side that is arranged on this fixed side plat part in the mode that keeps whirlpool shape; And convolution whirlpool dish, it has convolution side plat part and erects the second roll bending in the one side that is arranged on this convolution side plat part in the mode that keeps whirlpool shape, described the second roll bending engages with described the first roll bending while circles round with respect to described fixed eddy plate, form thus pressing chamber, be formed with the back pressure chamber for this convolution whirlpool dish being pressed on to described fixed eddy plate with respect to described fixed eddy plate in the back side of described convolution whirlpool dish, wherein, described scroll compressor is provided with: back pressure valve or back pressure hole, and it is for adjusting the pressure of described back pressure chamber; The first oil feeding mechanism, its row pressure space of discharging from the compressed refrigerant for from described pressing chamber supplies oil supply to described back pressure chamber; And second oil feeding mechanism, its from described back pressure chamber to described pressing chamber or the suction chamber of suction side that is formed at described pressing chamber for oil supply ".
According to the present invention, even if can provide at low-pressure than also carrying out fuel feeding and the high scroll compressor of reliability to back pressure chamber under condition.
Brief description of the drawings
Fig. 1 is the longitudinal sectional view of the scroll compressor of the present embodiment.
Fig. 2 illustrates the figure that is arranged on the slit on the dish jut of convolution whirlpool.
Fig. 3 illustrates the figure that is arranged on the oilhole on the dish jut of convolution whirlpool.
Fig. 4 is the enlarged view of back pressure valve.
Fig. 5 is the enlarged view of back pressure hole.
Fig. 6 is the plan view that represents the engagement of coiling in fixed eddy plate and convolution whirlpool.
Fig. 7 illustrates the figure that is arranged on the slit on the dish runner plate face of convolution whirlpool.
Fig. 8 is the concept map that the refrigeration cycle of the present embodiment is shown.
Embodiment
Below, use accompanying drawing to describe embodiment.
Embodiment 1
The present embodiment relates to the coolant compressor using in the refrigeration cycle of cooling, idle call etc. or the scroll compressor that is suitable as the gas compressor of pressurized air, other gases.First, the essential structure of scroll compressor is described.
Fig. 1 is the longitudinal sectional view of the scroll compressor of the present embodiment.As shown in the figure, fixed eddy plate (fixed eddy plate member) 7 has: discoideus fixed side plat part 7a (platen); The first roll bending 7b, it is erect and is arranged on this fixed side plat part 7a with whirlpool shape; And the support 7d of tubular, the outer circumferential side that it is positioned at fixed side plat part 7a, has the runner plate face continuous with the top end of the first roll bending 7b and surrounds the first roll bending 7b.
Setting is provided with the surface of fixed side plat part 7a of the first roll bending 7b because of 7c at the bottom of being known as tooth between the first roll bending 7b.In addition, the face that support 7d contacts with the convolution side plat part 8a (runner plate) of convolution whirlpool dish (convolution whirlpool dish member) 8 is formed as the runner plate face 7e of fixed eddy plate 7.The support 7d of fixed eddy plate 7 utilizes bolt etc. to be fixed on framework 17, utilizes fixed mechanisms such as welding grade to be fixed on housing (seal container) 9 with the framework 17 that fixed eddy plate 7 forms as one.
Described convolution whirlpool dish 8, to configure with the opposed mode of fixed eddy plate 7, makes the first roll bending 7b of fixed eddy plate engage and be arranged in framework 17 in the mode that can circle round with the second roll bending 8b of convolution whirlpool dish.Convolution whirlpool dish 8 has: discoideus convolution side plat part 8a; The second roll bending 8b, it keeps with whirlpool shape and erects the surface that is arranged on this convolution side plat part 8a is at the bottom of tooth on 8c; And jut 8d, it is arranged on the back side centre of convolution side plat part 8a.In addition, the surface contacting with fixed eddy plate 7 of the peripheral part of the convolution side plat part 8a runner plate face 8e of whirlpool dish 8 that is formed as circling round.The second roll bending 8b engages with the first roll bending 7b while revolves round the sun with respect to fixed eddy plate 7, forms thus pressing chamber 13.
Housing 9 is formed as being accommodated with in inside by fixed eddy plate 7 the seal container structure with convolution whirlpool the dish 8 whirlpool dish portions that form, motor part 16 (16a: rotor, 16b: stator) and lubricated wet goods.Axis body (running shaft) 10 fixing with the rotor 16a one of motor part 16 is supported on framework 17 via main bearing 5 in convolution mode freely, and coaxial with the central axis of fixed eddy plate 7.
Be provided with crank portion 10a on the top of axis body 10, this crank portion 10a is inserted into the convolution bearing 11 on the jut 8d that is arranged on convolution whirlpool dish 8, and convolution whirlpool dish 8 is configured to and can be accompanied by the rotation of axis body 10 and circles round.The central axis of convolution whirlpool dish 8 becomes the state that has predetermined distance with respect to the central axis bias of fixed eddy plate 7.In addition, the second roll bending 8b of convolution whirlpool dish 8 and the first roll bending 7b of fixed eddy plate 7 are overlapping in the mode of the predetermined angular that upwards staggers in week.Reference character 12 is cross slip-rings, and it is for being restricted to convolution whirlpool dish 8 with respect to fixed eddy plate 7 not rotations but circumnutation relatively.
Fig. 6 is the plan view that the engagement of coiling in fixed eddy plate and convolution whirlpool is shown, as shown in the figure, between the first roll bending 7b, 8b, be formed with multiple pressing chambers 13 (13a, 13b) of crescent shape, in the time that 8 circumnutation is coiled in the whirlpool that makes to circle round, along with moving to central part, volume dwindles each pressing chamber continuously., be formed with respectively convolution interior lines side pressing chamber 13a and convolution outside line side pressing chamber 13b in interior lines side and the outside line side of the second roll bending 8b of convolution whirlpool dish 8.Reference character 20 is suction chambers, and is the space midway that sucks fluid.This suction chamber 20 finishes from the phase advance of the circumnutation of convolution whirlpool dish 8 to become pressing chamber 13 moment of inclosure of fluid.
As shown in Fig. 1, Fig. 6, suction port 14 is arranged on fixed eddy plate 7.This suction port 14 runs through in the mode being communicated with suction chamber 20 outer circumferential side that is arranged on fixed side plat part 7a.In addition, exhaust port 15 runs through the vicinity, vortex core of the fixed side plat part 7a that is arranged on fixed eddy plate 7 in the mode being communicated with the pressing chamber 13 of inner circumferential side.
In the time utilizing motor part 16 to circle round driving to axis body 10, rotation is passed to convolution whirlpool dish 8 via convolution bearing 11 from the crank portion 10a of axis body 10, convolution whirlpool dish 8 is centered by the central axis of fixed eddy plate 7 and carry out circumnutation with the radius of gyration of predetermined distance.In the time carrying out this circumnutation, convolution whirlpool dish 8 is restricted to and is not carried out rotation by cross slip-ring 12.
The pressing chamber 13 forming between each the first roll bending 7b, the second roll bending 8b moves to central authorities continuously because of the circumnutation of convolution whirlpool dish 8, and the volume of pressing chamber 13 is along with this moves and dwindles continuously.Thus, the fluid sucking (for example, the refrigerant gas of circulation in refrigeration cycle) is compressed successively each pressing chamber 13 is interior from suction port 14, the fluid after compression is discharged to the discharge space 54 on housing top from exhaust port 15.The fluid being discharged from from discharge space 54 enter the motor room 52 in housing 9, from discharge tube 6 to compressor, for example refrigeration cycle supply with.
Lubricant oil is stored in the bottom of housing 9, is provided with volume type or centrifugal oil feed pump 21 in the lower end of axis body 10.Oil feed pump 21 and the convolution of axis body are circled round in the lump, suck lubricant oil and lubricant oil is discharged from the exhaust port 28 of oil feed pump from the lubricant oil suction port 25 being arranged on oil feed pump housing 22.The lubricant oil being discharged from is supplied with to top through being arranged on the through hole 3 on axis body.A part for lubricant oil is passed the store oil portion 53 that the cross-drilled hole 24 being arranged on axis body 10 lubricates supplementary bearing 23 and turns back to housing bottom.Other most lubricant oil arrive the crank portion 10a top of axis body 10 through through hole 3, and lubricate convolution bearing 11 through the oil groove 57 being arranged on crank portion 10a.Then, after being lubricated, the main bearing 5 of the bottom that is arranged on convolution bearing 11 returns to housing bottom through oil drainage hole 26a and oil exit pipe 26b.At this, be called in the lump the first space 33 by the space being formed by oil groove 57 and convolution bearing 11 and for the space (by framework 17, axis body 10, framework sealing 56, the convolution haunched member 34 that is arranged on the chimb shape of the jut 8d of convolution whirlpool dish 8, the space that sealing component 32 forms) of receiving main bearing 5.This first space 33 is spaces that pressure approaches head pressure.For lubricating spindle holds 5 and convolution the bearing 11 and major part that flows into the lubricant oil in the first space 33 is returned to housing bottom through oil drainage hole 26a and oil exit pipe 26b, but a part of lubricant oil, i.e. lubricated, the fixed eddy plate 7 of cross slip-ring 12 and the slide part of convolution whirlpool dish 8 lubricated and the lubricant oil that seals required minimum tolerance enter the back pressure chamber 18 as second space via the first oil feeding mechanism between the upper-end surface of sealing component 32 and the end face of the haunched member 34 that circles round.
Sealing component 32 inserts the annular groove 31 being arranged in framework 17 together with waved spring (not shown), and the back pressure chamber 18 that is formed as the first space 33 of head pressure and is formed as the pressure of the centre of suction pressure and head pressure is separated.
As shown in Figure 2, described the first oil feeding mechanism is made up of with described sealing component 32 one or more first slit 60 being arranged on convolution haunched member 34, and described the first slit 60 configures in the mode that strides across sealing component 32.In other words, the first oil feeding mechanism is made up of the first slit being arranged on the face of a side contrary with fixed eddy plate 7 of convolution whirlpool dish 8, and this first slit makes row pressure space (54,52,33) be communicated with all the time with back pressure chamber 18.Thus, oil utilizes the first space 33 and the pressure difference of back pressure chamber 18 to pass and flow into back pressure chamber 18 as the first slit 60 of micro-gap from the first space 33.
The configuration of this first slit 60 is not crossed over sealing component 32 all the time, and the circumnutation that also can be accompanied by convolution whirlpool dish 8 is crossed over off and on.In other words, the first slit 60 also can be configured to the convolution that is accompanied by convolution whirlpool dish 8 row pressure space (54,52,33) is communicated with off and on back pressure chamber 18.
As shown in Figure 3, as the first oil feeding mechanism described in other, for example formed with described sealing component 32 by the multiple holes 30 that are arranged on convolution haunched member 34, described multiple hole 30 is accompanied by the circumnutation of convolution whirlpool dish 8 and strides across the circular motion of sealing component 32, and moves between the first space 33 and back pressure chamber 18.Thus, the lubricant oil in the first space 33 is lodged in to hole 30, be transplanted on off and on back pressure chamber 18 and discharge, required minimal oil can be guided to back pressure chamber 18 thus.
If entering the back pressure of the lubricant oil after back pressure chamber 18 increases, lubricant oil enters suction chamber 20 (or pressing chamber 13) by the back pressure valve 61 that back pressure chamber 18 is communicated with suction chamber 20 (or pressing chamber 13), and discharges from exhaust port 15.An oily part of discharging from exhaust port 15 is for example discharged from discharge tube 6 to refrigeration cycle together with refrigerant gas, and remaining oil separates and be stored in the store oil portion 53 of housing bottom in housing 9 with refrigerant gas.
It should be noted that, as mentioned above, can control independently the required fuel delivery of each bearing portion and the required fuel delivery of pressing chamber because possessing described the first space 33, back pressure chamber 18 and the first oil feeding mechanism, therefore can make pressing chamber fuel delivery rationalize, can obtain high efficiency compressor.In addition, as other structures, also can adopt following structure: oil feed pump 21, the first space 33, the first oil feeding mechanism are not set, and the oil that the throttling that utilizes the micro-gap place of bearing portion is store oil portion 53 to head pressure reduces pressure and imports to back pressure chamber.In this case, all enter back pressure chamber by the oil after bearing portion, though therefore cannot control independently the fuel delivery of supplying with to bearing portion and pressing chamber, do not need the member such as oil feed pump 21, sealing component 32, simple structure and compressor cheaply can be provided.
Next back pressure is described in detail.In scroll compressor, because producing, its compression wants to make fixed eddy plate 7 and the convolution whirlpool dish 8 axial power that are separated from each other.If two whirlpool dishes separate, 8 break-off is coiled in so-called convolution whirlpool because this axial power occurs, the seal of pressing chamber worsens and the Efficiency Decreasing of compressor.Therefore, be formed as the back pressure chamber 18 of the pressure between head pressure and suction pressure in the back side setting of the convolution side plat part of convolution whirlpool dish 8, utilize its back pressure to offset Separating force, and convolution whirlpool is coiled to 8 press on fixed eddy plate 7.Now, if pressing force is excessive, the slippage loss of circle round the runner plate face 8e of whirlpool dish 8 and the runner plate face 7e of fixed eddy plate 7 increases, and compressor efficiency reduces.In other words, there is optimum value in back pressure, if the seal of too small pressing chamber worsens, hot fluid loss increases, if excessive slippage loss increases.Thereby it is important for the performance, the reliability that improve compressor that back pressure is maintained to optimum value.
In order to obtain this best back pressure value, in the scroll compressor of Fig. 1, possesses back pressure valve 61.
As shown in Figure 4, back pressure valve 61 has the space 61a communicating with back pressure chamber 18 and the space 61c that utilizes the access 61b that is arranged on fixed eddy plate 7 to communicate with suction chamber 20 (or pressing chamber 13), and this back pressure valve 61 disposes valve 61d to be separated out the mode in two spaces.Valve 61d is that spring 61f presses on the opening portion being communicated with space 61a by the elastomer of being fixed by stop member 61e.To be back pressure be moved upward than in the pressure of the suction chamber 20 (or pressing chamber 13) in the space 61c importing via access 61b and the high situation of the summation of the pressure of the pressing force corresponding to spring 61f pressure in the space 61a of valve 61d, and space 61a is communicated with space 61c.In other words, the pressure ratio of back pressure valve 61 in back pressure chamber 18 is worth when high emits the fluid in back pressure chamber 18 to suction chamber 20 or pressing chamber 13, thus back pressure is adjusted into fit value.It should be noted that, the back pressure value of back pressure valve 61 is " suction pressure+α (pressure corresponding with the pressing force of spring 61f) ".
In order to obtain best back pressure value, also can replace back pressure valve 61 and use back pressure hole 35.
As shown in Figure 5, back pressure hole 35 is paths of コ font, pressing chamber 13 is communicated with back pressure chamber 18 and will imports to back pressure chamber 18 with the corresponding pressure of pressing chamber pressure.The pressure of pressing chamber 13 rises along with the convolution of crankshaft.The value of back pressure determines which interval of the pressing chamber 13 in this compression process is communicated with back pressure chamber 18.Thereby, can be set as best back pressure value by adjusting this connecting section.It should be noted that, the back pressure value at back pressure hole 35 places is " suction pressure × β (by the definite compression ratio of the connecting section being communicated with pressing chamber 13) ".
It is more than the essential structure of scroll compressor.As the defect of this structure, can to list at low-pressure be head pressure than back pressure under condition equal above, cannot be to back pressure chamber 18 confession oil supply.At low-pressure, than under condition, the difference of head pressure and suction pressure is little.The value of back pressure is determined by back pressure valve 61 or back pressure hole 35 as mentioned above, uses respectively " suction pressure+α ", " suction pressure × β " to represent.In the case of low-pressure is less than the difference of the head pressure of condition and suction pressure, the back pressure value representing with these formulas also may exist and equate with head pressure or the situation larger than head pressure.Now, there is not the fuel feeding differential pressure of the first space 33 and back pressure chamber 18, cannot utilize the hole 30 of the first slit 60 or oil handover use to back pressure chamber 18 fuel feeding.
If cannot be to back pressure chamber 18 fuel feeding, because the insufficient lubrication reliability of the slide part of cross slip-ring 12 reduces.In addition, owing to not there is not the oil that is supplied to pressing chamber 13 via back pressure chamber 18, therefore the seal of pressing chamber 13 reduces, and filter loss increases, the Efficiency Decreasing of compressor.
Therefore, as shown in Figure 7, in the present embodiment, one or more second slit 62 is set as the second oil feeding mechanism at the runner plate face 8e of convolution whirlpool dish or the runner plate face 7e of fixed eddy plate.; supply to back pressure chamber 18 in the row pressure space (54,52,33) of discharging from the compressed refrigerant for from described pressing chamber 13 basis of the first oil feeding mechanism (the first slit 60) of oil supply, the position from back pressure chamber 18 to pressing chamber 13 or the court that are also provided with the compression starting stage from are formed on the suction chamber 20 of the suction side sucking to pressing chamber 13 for second oil feeding mechanism (the second slit 62) of oil supply.
More specifically, the second oil feeding mechanism is made up of the second slit 62 being arranged in the one side of convolution side plat part 8a or the one side of fixed side plat part 7a, and this second slit 62 is configured such that back pressure chamber 18 is communicated with all the time with the position of the compression starting stage of pressing chamber 13 or with described suction chamber.Or the second slit 62 also can be set to be accompanied by the convolution of convolution whirlpool dish 8 and back pressure chamber 18 is communicated with off and on the position of the compression starting stage of pressing chamber 13 or with suction chamber 20.Be configured to all the time or be communicated with suction chamber 20 off and on by forming in this way, making oil (or position of the compression starting stage of pressing chamber 13) outflow from back pressure chamber 18 to suction chamber 20.Thus, back pressure reduces, and oil flows out to suction chamber 20, and correspondingly, oil flows into back pressure chamber 18 from the first space 33.Also can replace the second slit 62 and the oily hole of transferring use is set.
At this, in the case of adopting the pressure adjustmenting mechanism of back pressure hole 35 as back pressure chamber 18, as shown in Figure 5, back pressure hole 35 makes back pressure chamber 18 be communicated with all the time or off and on pressing chamber 13 or with the suction chamber 20 of the suction side that is formed at described pressing chamber, as mentioned above, be set as best back pressure value by adjusting connecting section.But, at low-pressure than under condition, as mentioned above, the pressure " suction pressure × β (from the definite compression ratio of the connecting section being communicated with pressing chamber 13) " of back pressure chamber 18 increases and becomes and equate with row pressure space, therefore possibly cannot utilize the first oil feeding mechanism (the first slit 60) to carry out fuel feeding to back pressure chamber.
Therefore, in the present embodiment, utilize the second oil feeding mechanism (the second slit 62) to be made as the position by outer circumferential side (suction side), position that Billy's back pressure hole 35 is communicated with pressing chamber 13 or with back pressure chamber 18 to pressing chamber 13 or back pressure chamber 18 for the position of oil supply, can discharge thus the pressure of back pressure chamber 18, reduce thus the pressure of back pressure chamber 18, can utilize the first oil feeding mechanism (the first slit 60) to carry out fuel feeding to back pressure chamber.In addition, preferably the section area of the fuel feeding stream of the second oil feeding mechanism (the second slit 62) is less than the section area of the fuel feeding stream of back pressure hole 35.
It should be noted that, generally between fixed eddy plate runner plate face 7e and convolution whirlpool dish runner plate face 8e, having micro-gap, there is oily seepage to suction chamber 20 or to pressing chamber 13 in the back pressure chamber 18 from this stream.Consider the oily seepage at this runner plate face place, the flow path resistance that makes in advance the second slit 62 or oil transfer the hole of use is greatly desirable than the flow path resistance that is arranged on the first slit 60 of convolution haunched member 34 or the hole 30 of oil handover use, in this case, can suppress the unfavorable condition such as abnormal reduction of back pressure.Because flow path resistance is subject to the degree of depth considerable influence of slit, therefore, for example, as long as the degree of depth of the second slit 62 that is arranged on convolution whirlpool dish runner plate face 8e is set as than the depth as shallow of the first slit 60 that is arranged on convolution haunched member 34.
In addition, the circumnutation that the first slit 60 of convolution haunched member 34 is set to be accompanied by convolution whirlpool dish 8 makes the first space 33 be communicated with back pressure chamber 18 off and on, the second slit 62 of convolution whirlpool dish runner plate face 8e is also set to make off and on back pressure chamber 18 to be communicated with suction chamber 20 (or pressing chamber 13), and the identical situation in interval that two slits are communicated with is respectively better.In other words, make the first slit 60 and the second slit 62 intermittence be communicated with moment mutually the same.For example, only 90 degree that each slit is set to carry out with goniometer in 360 degree circumnutations at convolution whirlpool dish 8 are communicated with each space, thus, and with respect to the slit being communicated with all the time in 360 degree, slit depth can be deepened, the foreign matters from being blocked at slit place can be suppressed and the processing of slit is simple.In addition, in above-mentioned example, coincide if make in advance the connection in the time that 90 degree are communicated with of the first slit 60 and the second slit 62 start angle (phase place), because oil phase almost completes with outflow for the inflow of back pressure chamber 18 simultaneously, therefore the variation of back pressure can be suppressed for less.
It should be noted that, in the situation that using back pressure hole 35 as back pressure regulating mechanism, by arrange the second slit 62 come back pressure reduce time, except oil flows into from the first space 33 to back pressure chamber 18, pressing chamber 13 also increases with the pressure difference of back pressure chamber 18, refrigerant gas and oil flow into back pressure chamber 18 through back pressure hole 35, and therefore the effect of the present embodiment is than a little less than being used the situation of back pressure valve 61.In the situation that using back pressure valve 61, even if in the time that back pressure reduces, back pressure valve 61 is also realized the effect of one-way valve, therefore utilizes oil to increase back pressure from the first space 33 to the inflow of back pressure chamber 18, the effect enhancing of the present embodiment.
As shown in Figure 8, by scroll compressor 1 described above be applied to possess to the refrigeration agent after being compressed by this scroll compressor 1 carry out the condenser 40 of condensation, to the mechanism of decompressor being reduced pressure by the condensed refrigeration agent of condenser 40 (expansion valve 41), make the refrigerating circulatory device by the vaporizer 42 of the post-decompression refrigeration agent of the mechanism of decompressor (expansion valve 41) evaporation and wind pushing mechanism that this vaporizer 42 is blown, the air conditioner that year power consumption is little and range of operation is wide and convenience of use is good can be provided.
Description of reference numerals is as follows:
3 through holes
5 main bearings
6 discharge tubes
7 fixed eddy plates (7a: fixed side plat part, 7b: the first roll bending, 7c: at the bottom of tooth, 7d: support, 7e: runner plate face)
8 convolution whirlpools dishes (8a: convolution side plat part, 8b: the second roll bending, 8c: at the bottom of tooth, 8d: jut, 8e: runner plate face)
9 housings (seal container)
10 axis bodies (rotary shaft) (10a: crank portion)
11 convolution bearings
12 cross slip-rings
13 pressing chambers (13a: convolution interior lines side pressing chamber, 13b: convolution outside line side pressing chamber)
14 suction ports
15 exhaust ports
16 motor part (16a: rotor, 16b: stator)
17 frameworks
18 back pressure chambers
20 suction chambers
21 oil feed pumps
23 supplementary bearings
30 holes
32 sealing components
33 first spaces
34 convolution haunched members
35 back pressure hole
52 motor room
53 store oil portions
54 discharge space
60 are arranged on the first slit on the dish jut of convolution whirlpool
61 back pressure valves (61a: the space, the 61b that communicate with back pressure chamber: access, 61c: the space, the 61d that communicate with suction chamber or pressing chamber: valve, 61e: stop member, 61f: spring)
62 are arranged on the second slit on the dish runner plate face of convolution whirlpool
Claims (according to the amendment of the 19th article of treaty)
1. (after amendment) a kind of scroll compressor, it possesses:
Fixed eddy plate, it has fixed side plat part and erects the first roll bending in the one side that is arranged on this fixed side plat part in the mode that keeps whirlpool shape; And
Convolution whirlpool dish, it has convolution side plat part and erects the second roll bending in the one side that is arranged on this convolution side plat part in the mode that keeps whirlpool shape, described the second roll bending engages with described the first roll bending while with respect to described fixed eddy plate convolution, forms thus pressing chamber
Be formed with the back pressure chamber for this convolution whirlpool dish being pressed on to described fixed eddy plate with respect to described fixed eddy plate in the back side of described convolution whirlpool dish,
Described scroll compressor is characterised in that,
Described scroll compressor is provided with:
Back pressure valve or back pressure hole, it is for adjusting the pressure of described back pressure chamber;
The first oil feeding mechanism, its row pressure space of discharging from the compressed refrigerant for from described pressing chamber supplies oil supply to described back pressure chamber; And
The second oil feeding mechanism, its from described back pressure chamber to described pressing chamber or the suction chamber of suction side that is formed at described pressing chamber for oil supply,
This second oil feeding mechanism is made up of the second slit being arranged in the described one side of described convolution side plat part or the described one side of described fixed side plat part,
This second slit is configured such that described back pressure chamber is communicated with all the time with position or the described suction chamber of the compression starting stage of described pressing chamber.
2. scroll compressor according to claim 1, is characterized in that,
The suction chamber that described back pressure valve makes described back pressure chamber and described pressing chamber or is formed at the suction side of described pressing chamber in the situation that defined terms is set up is communicated with.
3. scroll compressor according to claim 2, is characterized in that,
Described back pressure valve has elastomer,
Described defined terms is the situation that the summation of the pressure of elastomeric pressing force and described pressing chamber or described suction chamber described in the pressure ratio of described back pressure chamber is high.
4. scroll compressor according to claim 1, is characterized in that,
The suction chamber that described back pressure hole makes described back pressure chamber and described pressing chamber or is formed at the suction side of described pressing chamber is communicated with all the time or off and on,
Utilize position that described the second oil feeding mechanism is communicated with described pressing chamber or described suction chamber for the described back pressure hole of position Billy of oil supply to described pressing chamber or described suction chamber by outer circumferential side.
5. scroll compressor according to claim 1, is characterized in that,
The suction chamber that described back pressure hole makes described back pressure chamber and described pressing chamber or is formed at the suction side of described pressing chamber is communicated with all the time or off and on,
The section area of the fuel feeding stream of described the second oil feeding mechanism is less than the section area of the fuel feeding stream of described back pressure hole.
6. scroll compressor according to claim 1, is characterized in that,
Described the first oil feeding mechanism is made up of the first slit being arranged on the face of a side contrary with described fixed eddy plate of described convolution whirlpool dish, and this first slit is configured such that described row pressure space is communicated with all the time with described back pressure chamber.
7. scroll compressor according to claim 1, is characterized in that,
Described the first oil feeding mechanism is made up of the first slit or the multiple hole that are arranged on the face of a side contrary with described fixed eddy plate of described convolution whirlpool dish, and this first slit or multiple hole are set to be accompanied by the convolution of described convolution whirlpool dish and described row pressure space is communicated with off and on described back pressure chamber.
8. (deletion)
9. (deletion)
10. (after amendment) a kind of scroll compressor, it possesses:
Fixed eddy plate, it has fixed side plat part and erects the first roll bending in the one side that is arranged on this fixed side plat part in the mode that keeps whirlpool shape; And
Convolution whirlpool dish, it has convolution side plat part and erects the second roll bending in the one side that is arranged on this convolution side plat part in the mode that keeps whirlpool shape, described the second roll bending engages with described the first roll bending while with respect to described fixed eddy plate convolution, forms thus pressing chamber
Be formed with the back pressure chamber for this convolution whirlpool dish being pressed on to described fixed eddy plate with respect to described fixed eddy plate in the back side of described convolution whirlpool dish,
Described scroll compressor is characterised in that,
Described scroll compressor is provided with:
Back pressure valve or back pressure hole, it is for adjusting the pressure of described back pressure chamber;
The first oil feeding mechanism, its row pressure space of discharging from the compressed refrigerant for from described pressing chamber supplies oil supply to described back pressure chamber; And
The second oil feeding mechanism, its from described back pressure chamber to described pressing chamber or the suction chamber of suction side that is formed at described pressing chamber for oil supply,
The flow path resistance of described the second oil feeding mechanism is larger than the flow path resistance of described the first oil feeding mechanism.
11. (after amendment) scroll compressor according to claim 10, is characterized in that,
The depth ratio that forms the slit of described the second oil feeding mechanism forms the depth as shallow of the slit of described the first oil feeding mechanism.
12. (after amendment) a kind of scroll compressor, it possesses:
Fixed eddy plate, it has fixed side plat part and erects the first roll bending in the one side that is arranged on this fixed side plat part in the mode that keeps whirlpool shape; And
Convolution whirlpool dish, it has convolution side plat part and erects the second roll bending in the one side that is arranged on this convolution side plat part in the mode that keeps whirlpool shape, described the second roll bending engages with described the first roll bending while with respect to described fixed eddy plate convolution, forms thus pressing chamber
Be formed with the back pressure chamber for this convolution whirlpool dish being pressed on to described fixed eddy plate with respect to described fixed eddy plate in the back side of described convolution whirlpool dish,
Described scroll compressor is characterised in that,
Described scroll compressor is provided with:
Back pressure valve or back pressure hole, it is for adjusting the pressure of described back pressure chamber;
The first oil feeding mechanism, its row pressure space of discharging from the compressed refrigerant for from described pressing chamber supplies oil supply to described back pressure chamber; And
The second oil feeding mechanism, its from described back pressure chamber to described pressing chamber or the suction chamber of suction side that is formed at described pressing chamber for oil supply,
Described the first oil feeding mechanism is made up of the first slit being arranged on the face of a side contrary with described fixed eddy plate of described convolution whirlpool dish, this first slit is set to be accompanied by the convolution of described convolution whirlpool dish and described row pressure space is communicated with off and on described back pressure chamber
Described the second oil feeding mechanism is made up of the second slit being arranged in the described one side of described convolution side plat part or the described one side of described fixed side plat part, this second slit is set to be accompanied by the convolution of described convolution whirlpool dish and described back pressure chamber is communicated with off and on described pressing chamber or described suction chamber
The moment that be communicated with the intermittence of described the first slit and described the second slit is mutually the same.
13. (after amendment) a kind of refrigerating circulatory device, it possesses:
Compressor, it is for compressed refrigerant;
Condenser, it carries out condensation to the refrigeration agent by after this compressor compresses;
The mechanism of decompressor, it is to being reduced pressure by the refrigeration agent after this condenser condenses;
Vaporizer, it makes to be evaporated by the post-decompression refrigeration agent of this mechanism of decompressor; And
Wind pushing mechanism, it is blown to this vaporizer,
Described refrigerating circulatory device is characterised in that,
Described compressor adopts the scroll compressor described in any one in claim 1 to 7.
Claims (13)
1. a scroll compressor, it possesses:
Fixed eddy plate, it has fixed side plat part and erects the first roll bending in the one side that is arranged on this fixed side plat part in the mode that keeps whirlpool shape; And
Convolution whirlpool dish, it has convolution side plat part and erects the second roll bending in the one side that is arranged on this convolution side plat part in the mode that keeps whirlpool shape, described the second roll bending engages with described the first roll bending while with respect to described fixed eddy plate convolution, forms thus pressing chamber
Be formed with the back pressure chamber for this convolution whirlpool dish being pressed on to described fixed eddy plate with respect to described fixed eddy plate in the back side of described convolution whirlpool dish,
Described scroll compressor is characterised in that,
Described scroll compressor is provided with:
Back pressure valve or back pressure hole, it is for adjusting the pressure of described back pressure chamber;
The first oil feeding mechanism, its row pressure space of discharging from the compressed refrigerant for from described pressing chamber supplies oil supply to described back pressure chamber; And
The second oil feeding mechanism, its from described back pressure chamber to described pressing chamber or the suction chamber of suction side that is formed at described pressing chamber for oil supply.
2. scroll compressor according to claim 1, is characterized in that,
The suction chamber that described back pressure valve makes described back pressure chamber and described pressing chamber or is formed at the suction side of described pressing chamber in the situation that defined terms is set up is communicated with.
3. scroll compressor according to claim 2, is characterized in that,
Described back pressure valve has elastomer,
Described defined terms is the situation that the summation of the pressure of elastomeric pressing force and described pressing chamber or described suction chamber described in the pressure ratio of described back pressure chamber is high.
4. scroll compressor according to claim 1, is characterized in that,
The suction chamber that described back pressure hole makes described back pressure chamber and described pressing chamber or is formed at the suction side of described pressing chamber is communicated with all the time or off and on,
Utilize position that described the second oil feeding mechanism is communicated with described pressing chamber or described suction chamber for the described back pressure hole of position Billy of oil supply to described pressing chamber or described suction chamber by outer circumferential side.
5. scroll compressor according to claim 1, is characterized in that,
The suction chamber that described back pressure hole makes described back pressure chamber and described pressing chamber or is formed at the suction side of described pressing chamber is communicated with all the time or off and on,
The section area of the fuel feeding stream of described the second oil feeding mechanism is less than the section area of the fuel feeding stream of described back pressure hole.
6. scroll compressor according to claim 1, is characterized in that,
Described the first oil feeding mechanism is made up of the first slit being arranged on the face of a side contrary with described fixed eddy plate of described convolution whirlpool dish, and this first slit is configured such that described row pressure space is communicated with all the time with described back pressure chamber.
7. scroll compressor according to claim 1, is characterized in that,
Described the first oil feeding mechanism is made up of the first slit or the multiple hole that are arranged on the face of a side contrary with described fixed eddy plate of described convolution whirlpool dish, and this first slit or multiple hole are set to be accompanied by the convolution of described convolution whirlpool dish and described row pressure space is communicated with off and on described back pressure chamber.
8. scroll compressor according to claim 1, is characterized in that,
Described the second oil feeding mechanism is made up of the second slit being arranged in the described one side of described convolution side plat part or the described one side of described fixed side plat part,
This second slit is configured such that described back pressure chamber is communicated with all the time with position or the described suction chamber of the compression starting stage of described pressing chamber.
9. scroll compressor according to claim 1, is characterized in that,
Described the second oil feeding mechanism is made up of the second slit being arranged in the described one side of described convolution side plat part or the described one side of described fixed side plat part,
This second slit is set to be accompanied by the convolution of described convolution whirlpool dish and described back pressure chamber is communicated with off and on position or the described suction chamber of the compression starting stage of described pressing chamber.
10. according to the scroll compressor described in any one in claim 1 to 9, it is characterized in that,
The flow path resistance of described the second oil feeding mechanism is larger than the flow path resistance of described the first oil feeding mechanism.
11. according to the scroll compressor described in any one in claim 1 to 9, it is characterized in that,
The depth ratio that forms the slit of described the second oil feeding mechanism forms the depth as shallow of the slit of described the first oil feeding mechanism.
12. according to the scroll compressor described in any one in claim 1 to 9, it is characterized in that,
Described the first oil feeding mechanism is made up of the first slit being arranged on the face of a side contrary with described fixed eddy plate of described convolution whirlpool dish, this first slit is set to be accompanied by the convolution of described convolution whirlpool dish and described row pressure space is communicated with off and on described back pressure chamber
Described the second oil feeding mechanism is made up of the second slit being arranged in the described one side of described convolution side plat part or the described one side of described fixed side plat part, this second slit is set to be accompanied by the convolution of described convolution whirlpool dish and described back pressure chamber is communicated with off and on described pressing chamber or described suction chamber
The moment that be communicated with the intermittence of described the first slit and described the second slit is mutually the same.
13. 1 kinds of refrigerating circulatory devices, it possesses:
Compressor, it is for compressed refrigerant;
Condenser, it carries out condensation to the refrigeration agent by after this compressor compresses;
The mechanism of decompressor, it is to being reduced pressure by the refrigeration agent after this condenser condenses;
Vaporizer, it makes to be evaporated by the post-decompression refrigeration agent of this mechanism of decompressor; And
Wind pushing mechanism, it is blown to this vaporizer,
Described refrigerating circulatory device is characterised in that,
Described compressor adopts the scroll compressor described in any one in claim 1 to 9.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2012/002000 WO2013140458A1 (en) | 2012-03-23 | 2012-03-23 | Scroll compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104105881A true CN104105881A (en) | 2014-10-15 |
| CN104105881B CN104105881B (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280068982.7A Expired - Fee Related CN104105881B (en) | 2012-03-23 | 2012-03-23 | Scroll compressor |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5771739B2 (en) |
| CN (1) | CN104105881B (en) |
| WO (1) | WO2013140458A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107893757A (en) * | 2017-11-06 | 2018-04-10 | 珠海格力电器股份有限公司 | The control method of screw compressor, air conditioner and screw compressor |
| CN108138772A (en) * | 2015-11-20 | 2018-06-08 | 欧伊特股份有限公司 | According to the Stirling engine of spiral principle, method, vehicles air-conditioning equipment and the vehicles of operation Stirling engine |
| CN114651128A (en) * | 2019-12-17 | 2022-06-21 | 日立江森自控空调有限公司 | Scroll compressor having a discharge port |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016048056A (en) * | 2014-08-28 | 2016-04-07 | サンデンホールディングス株式会社 | Scroll type fluid machine and freezer unit using the same |
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2012
- 2012-03-23 WO PCT/JP2012/002000 patent/WO2013140458A1/en active Application Filing
- 2012-03-23 JP JP2014505806A patent/JP5771739B2/en not_active Expired - Fee Related
- 2012-03-23 CN CN201280068982.7A patent/CN104105881B/en not_active Expired - Fee Related
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| JP2008196370A (en) * | 2007-02-13 | 2008-08-28 | Sanden Corp | Fluid machine |
| JP2009024664A (en) * | 2007-07-23 | 2009-02-05 | Sanden Corp | Scroll fluid machine |
| CN102245903A (en) * | 2008-12-15 | 2011-11-16 | 松下电器产业株式会社 | Scroll compressor |
| CN101988497A (en) * | 2009-07-29 | 2011-03-23 | 松下电器产业株式会社 | Vortex compressor |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108138772A (en) * | 2015-11-20 | 2018-06-08 | 欧伊特股份有限公司 | According to the Stirling engine of spiral principle, method, vehicles air-conditioning equipment and the vehicles of operation Stirling engine |
| CN108138772B (en) * | 2015-11-20 | 2020-03-17 | 欧伊特股份有限公司 | Positive displacement machine according to the screw principle, method for operating a positive displacement machine, vehicle air conditioning system and vehicle |
| US11448218B2 (en) | 2015-11-20 | 2022-09-20 | OET GmbH | Displacement machine according to the spiral principle, method to regulate pressure in the counter-pressure chamber by using a pressure difference and characteristic curve |
| CN107893757A (en) * | 2017-11-06 | 2018-04-10 | 珠海格力电器股份有限公司 | The control method of screw compressor, air conditioner and screw compressor |
| CN107893757B (en) * | 2017-11-06 | 2023-10-03 | 珠海格力电器股份有限公司 | Scroll compressor, air conditioner and control method of scroll compressor |
| CN114651128A (en) * | 2019-12-17 | 2022-06-21 | 日立江森自控空调有限公司 | Scroll compressor having a discharge port |
| CN114651128B (en) * | 2019-12-17 | 2022-12-06 | 日立江森自控空调有限公司 | Scroll compressor having a scroll compressor with a suction chamber |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5771739B2 (en) | 2015-09-02 |
| JPWO2013140458A1 (en) | 2015-08-03 |
| WO2013140458A1 (en) | 2013-09-26 |
| CN104105881B (en) | 2016-08-24 |
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Effective date of registration: 20160829 Address after: Hongkong aoteng Plaza No. 8 Chinese Kowloon Linze street 12 floor Patentee after: Johnson Controls Hitachi air conditioning technology (Hong Kong) Co.,Ltd. Address before: Tokyo, Japan Patentee before: Hitachi Appliances, Inc. |
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